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#1
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engine choices
I saw one post about evinrude marine motors being used for aircraft, and
issues due to water cooling. has there been other engines that have been used? say snomobile engines? A freind of mine has a evinrude snomobile engine that he thinks might work. I think otherwise |
#2
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"Tater Schuld" wrote in message ... I saw one post about evinrude marine motors being used for aircraft, and issues due to water cooling. has there been other engines that have been used? say snomobile engines? A freind of mine has a evinrude snomobile engine that he thinks might work. I think otherwise What otherwise do ya think there Tater? |
#3
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engine choices
"karel" wrote in message
... "Tater Schuld" schreef in bericht ... I saw one post about evinrude marine motors being used for aircraft, and issues due to water cooling. has there been other engines that have been used? say snomobile engines? A freind of mine has a evinrude snomobile engine that he thinks might work. I think otherwise There's one execellent snowmobile engine conversion, it's called a Rotax. I wasnt sure but i thought there was a snomobile tht used rotax engines. didn't want to show my ignorance. why only one engine conversion? have evinrude come up with a similar unit, charge 10% less than rotax, and clean up in a new market! |
#4
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engine choices
Evinrude and Rotax are both owned by Bombardier Recreational Products Inc.
"Tater Schuld" wrote in message news "karel" wrote in message ... "Tater Schuld" schreef in bericht ... I saw one post about evinrude marine motors being used for aircraft, and issues due to water cooling. has there been other engines that have been used? say snomobile engines? A freind of mine has a evinrude snomobile engine that he thinks might work. I think otherwise There's one execellent snowmobile engine conversion, it's called a Rotax. I wasnt sure but i thought there was a snomobile tht used rotax engines. didn't want to show my ignorance. why only one engine conversion? have evinrude come up with a similar unit, charge 10% less than rotax, and clean up in a new market! |
#5
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"Lakeview Bill" wrote in message om... Evinrude and Rotax are both owned by Bombardier Recreational Products Inc. Yeah, i assumed so. I didn't want to blurt it out if i was wrong tho..... anyway, I talked to a few snomobilers in the area, and they say that a 60hp engine shouldnt cost more than $500 NEW, maybe $300 used. add a redrive and I *should* be go, right? (i know I am wrong, i want you to tell me WHY i am wrong) |
#6
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Tater Schuld wrote: "Lakeview Bill" wrote in message om... Evinrude and Rotax are both owned by Bombardier Recreational Products Inc. Yeah, i assumed so. I didn't want to blurt it out if i was wrong tho..... anyway, I talked to a few snomobilers in the area, and they say that a 60hp engine shouldnt cost more than $500 NEW, maybe $300 used. add a redrive and I *should* be go, right? (i know I am wrong, i want you to tell me WHY i am wrong) The Rotax two cycle snowmobile style engines sold for ultralight use were upgraded versions and have fallen out of favor due to seizures, even with liquid cooled versions. My guess is the redrives were set up to not easily go on to the commodity snowmobile engine either. I haven't seen a two cycle anything in the pattern over my house in years: we had several Avid Flyers and Kitfoxes buzzing overhead in the late 80s and early 90s. Now we have T-6s and L-39s! We've yupscaled. Most people want to get as far away from two cycle power as possible. I never understood why the Mazda rotary is not used in outboard engines. I know some Honda outboards use an automotive engine core, and that at one time there were licensing issues with the Wnakel patents restricting Toyo Kogyo from industrial sales. Those patents are now long since history. |
#7
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Bret Ludwig wrote:
The Rotax two cycle snowmobile style engines sold for ultralight use were upgraded versions and have fallen out of favor due to seizures, even with liquid cooled versions. My guess is the redrives were set up to not easily go on to the commodity snowmobile engine either. I haven't seen a two cycle anything in the pattern over my house in years: we had several Avid Flyers and Kitfoxes buzzing overhead in the late 80s and early 90s. Now we have T-6s and L-39s! We've yupscaled. We have an eclectic mix of VW and two-stroke around here. I've flown a few of each - mostly draggy parasols (natch). The V-dub's mighty roar is a lot of fun. Reliability-wise, I think it depends a lot on the individual airplane. Not just how well the thing is built, but also how well powered it is. You see, I've come _not_ to believe in under powered homebuilts. They are just not that much fun. Unfortunately. I've never flown a 1600 that I was really comfortable in. The engine blaring out 90 to 95 percent just to maintain altitude? If you can't hear that engine straining, then you have no machine in your soul. The 1835 is a different story. There's enough there to throttle back and find a sweet spot. Enough prop to climb well. Considering what it costs to build one, the 1835 should be *the* VW. The 2180 is a sweet thing. Loaf along at 3 GPH? Or Roar up at the clouds. But.. Fully dressed with accessory case, Bendex mag, electric start, 20 Amp alternator = 205 pounds? And an expensive thing by comparison. Robert Padget (Zuehl) built a little 1/2 VW parasol that actually flew. I never got to fly is, but I saw it fly quite often. 900 some CC. And Robert is often called Big Bob, because he is. It flew well. Vibrated like hell over most of the RPM range. But you kind of have to expect that. Now, with my current medical situation, caught in the catch 22 of the Sport Pilot rules... I've been thinking about the smooth immediate power of a Rotax 503. Again. Just as a practical solution to getting back in the air. That 254 pound weight limit is a (explicative deleted) tough one. But with a Rotax 2 stroke on it, looks like it, sounds like it, and smells like it... fly it! Richard |
#8
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"Richard Lamb" wrote in message nk.net... Bret Ludwig wrote: The Rotax two cycle snowmobile style engines sold for ultralight use were upgraded versions and have fallen out of favor due to seizures, even with liquid cooled versions. First, calling a Rotax 582 a "snowmobile engine" is misleading. They were (and are) sold specifically as aircraft engines, they put out around 65 HP, and they had several upgrades internal to them (better wrist pin bearings was one). The new price was around $5000. The snowmobile version of the same engine (the 583) had around 90 hp, showing how much Rotax gave up in an attempt to upgrade reliability.. The reason there was (is) such a reliability problem has to do with carburetion. Several things that you'd never expect were common failure modes. I remember the following: The engine would shake so badly it'd foam the fuel in the float bowl - not enough fuel getting to the engine caused a lean mixture, lean mixture causes overheating, overheating causes the pistons to expand until they're bigger than the bore. Pistons would seize. If you succeeded in landing, you'd find the (now cool) engine would start and run fine. Get a pair of clean shorts, then go back up?!?? This could happen other ways as well. The common thread was the thing goes lean and seizes. Right in the operators manual, it says that the thing may stop without warning. I had it drilled into me by my (now dead) flight instructor that you "never fly over anything you can't land on." The new snowmobile engines don't do that. Fuel injection is not subject to such things - and if it does see the temp headed for trouble, it'll throttle back - not die completely. My new Polaris Fusion 900 snowmobile ( http://www.polarisindustries.com/en-...nce/900Fusion/ ) has an engine that weighs less than a Rotax 582, puts out 150 hp, and is fuel injected by a mature reliable design. It will also do 135 mph on Harding lake from now 'till the spring thaw! The only thing stopping me from ripping it out of the snowmobile and mounting it on my kitfox clone is money, and a strong paternal feeling for the snowbound F-16 fighter it's in now ;^} |
#9
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"Ron Webb" wrote in message ... "Richard Lamb" wrote in message nk.net... Bret Ludwig wrote: The Rotax two cycle snowmobile style engines sold for ultralight use were upgraded versions and have fallen out of favor due to seizures, even with liquid cooled versions. First, calling a Rotax 582 a "snowmobile engine" is misleading. They were (and are) sold specifically as aircraft engines, they put out around 65 HP, don't recall him referring to the 582s in particluar. just that snomobile engines were used for ultralights |
#10
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engine choices
"Ron Webb" wrote in message ... "Richard Lamb" wrote in message nk.net... Bret Ludwig wrote: The Rotax two cycle snowmobile style engines sold for ultralight use were upgraded versions and have fallen out of favor due to seizures, even with liquid cooled versions. ........ The new snowmobile engines don't do that. Fuel injection is not subject to such things - and if it does see the temp headed for trouble, it'll throttle back - not die completely. My new Polaris Fusion 900 snowmobile ( http://www.polarisindustries.com/en-...nce/900Fusion/ ) has an engine that weighs less than a Rotax 582, puts out 150 hp, and is fuel injected by a mature reliable design. It will also do 135 mph on Harding lake from now 'till the spring thaw! The only thing stopping me from ripping it out of the snowmobile and mounting it on my kitfox clone is money, and a strong paternal feeling for the snowbound F-16 fighter it's in now ;^} yeah, i saw some of those. about the same price as an ultralight kit w/o motor, or sometimes with. if I had the choice between a snomobile and an ultralight, i'd go fly. right now neigther option is available yet (YET!) so all i can do is speculate and window shop. |
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